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primary 5 | Maths
| Angles & Geometry
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Hihihi !!Can anyone help to check if my ans is correct? I would like to know ........thank u so much
Date Posted: 3 years ago
Views: 483
Final answer correct, working not so.
Cannot assume that the smaller triangle is isosceles.
Rather ,
Since angle sum of a triangle is 180°,
Big triangle :
x° + 16° + 19° + 2 unknown angles = 180°
Smaller triangle :
133° + 2 unknown angles = 180°
Cannot assume that the smaller triangle is isosceles.
Rather ,
Since angle sum of a triangle is 180°,
Big triangle :
x° + 16° + 19° + 2 unknown angles = 180°
Smaller triangle :
133° + 2 unknown angles = 180°
This tells us that :
133° = x° + 16° + 19°
x° = 133° - 16° - 19°
= 90°
If you realised the relationship from the start, one step is enough to solve the question without any drawing of lines.
133° = x° + 16° + 19°
x° = 133° - 16° - 19°
= 90°
If you realised the relationship from the start, one step is enough to solve the question without any drawing of lines.
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Thabk you soooo much for ur help !! You were very helpful!!Kind too!!Thanks u !!i whis u a blessed life ahead !!
Wish **
U r most welcome. My pleasure
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